Combined lock and signal and lighting switch.



- W. R. SGHLAGE. COMBINED LOOK AND SIGNAL 'AND LIGHTING SWITCH.

APPLICATION FILED 1330.14, 1908.

Patented May 11, 1909.

WITNESSES INVENTOR I WALTER R. SCHLAGE ms A ORNEY UNITED STATES PATENT ori ion.

.WALTER R. SGHLAGE, OF BERKELEY, CALIFORNIA.

COMBINED LOCK AND SIGNAL AND LIGHTING SWITCH.

To all whom it may concern.-

Be it known that I, WALTER R. SCHLAGE, citizen of Germany, residing at Berkeley, in the county of Alameda and State of California, have invented new and useful Improvements in a Combined Lock and Signal and Lighting Switch, of which the following is a specification.

This invention relates to circuit making mechanism, and pertains especially to lighting and signal circuits, in combination with mechanism for closing and opening the same.

It is desirable to provide means by which an electric circuit operating lights or suitable signals may be controlled or manipulated simultaneously with the opening of a door or the like.

More particularly it is the purpose of this invention to devise a mechanism which, in combination with the usual door latch and lock, will be normally operative to close an electric circuit.

Further, it is the object of the present in vention to provide means whereby the circuit-closer may be made ino erative without interfering with the usual 'unctions of the door latch.

An important object of my invention is to design, and devise, and provide an attachment of chea construction, simple operation, and whic may be readily attached to a door lock of ordinary construction.

My invention consists of the parts and the construction and combination of parts, or their equivalents, as set forth in the following specification and accompanying drawings, in which.

Figure 1 is an edge view of the lock, and the attachment. Fig. 2 is a side elevation partially in section, with the parts in the normal or open position. Fig. 3 is a similar view showing the circuit closing position of the parts. Fig. 4 shows the parts uncoupled.

In the mode of construction and operation of my invention as actually embodied in practice, and as shown in the drawing, I rigidly secure a double acting earn 5 upon the stem 2 of the door-knob 3 of the ordinary or usual latch or look case In the normal position of the parts of the lock mechanism, this cam has a horizontally disposed bearing lug or ournal 6 on either side of the stem 2, and in which position a link plate 7 rests upon the journals 6. This late 7 is pivoted at 8 to a spring-actuated ever 9 in such a Specification of Letters Patent.

Application filed December 14, 1908.

Patented May 11, 1909.

Serial No. 467,448.

manner that as the door-knob 3 and its stem is oscillated in either direction upon its axis, one or the other of the lower corners of the plate 7 will be engaged by its journal 6 and lifted to oscillate the lever 9 about its pivot 10. The plate 7 is normally disposed so as to be in engagement with the two journals 6 by a spring 11 which is secured to the lever 9 at one end, and has its other end secured to a rigid portion of the casing of the lock.

Pivotally mounted, as at 12, u on the outer end of the lever 9, is a rocka le connector or coupler 13 which carries a pin 14 which is adapted to travel freely in a slot 15 made longitudinally in a pivoted lever or coupler actuator 16. Vr'hen the latching mechanism of the door is in its normal or idle position, the coupler 13 is adapted to stand beneath the end of the lever 18 which carries a spring arm 19 provided with an insulated contact or circuit making knife member 20 which is adapted to be thrust in be tween the jaws or contact pieces 21, and thereby complete an electric circuit through the lead wires 2223, which in this case may be assumed to lead into a lighting circuit of the room or hallway into which the door, carrying the latch or lock case l, may open. Obviously, the wires 2223 may be connected to close any other desirable circuit, such, for instance, as an alarm or signal operating circuit.

The operation of the mechanism thus far described will then be as follows: Assuming that the handle 3 of the door has been turned to the right, as indicated in Fig. 3, the lefthand journal 6 will then be effective to raise the member 7 and its associated lever 9 and coupler 13, which latter in turn abutting against the end of the lever 18, turns this lever about its pivot 24, thereby carrying the contact blade 20 into the spring contact pieces 21 which are adapted to frictionally engage and hold the contact piece 20 in this closed position until other means, hereinafter to be described, are actuated to break this circuit. Obviously, when the knob 3 is re leased, its governing spring, in conjunction with the spring 11, will return the cam 5 to the normally inoperative position so that the member 7 will again become seated upon the journals 6 thus, after the circuit making lever 18 has once been closed, the knob 3 may then be operated without interfering with the electric current. For the purpose of disengaging the switch members 2021, and

' the stop 31.

for locking the switch against being closed by the door-knob, I provide a handle 25 carried by a short shaft 26 which is journaled in the lock case. This shaft 26 carries a trip arm 27, a diametrically opposes. locking arm 28, and cam member 29. A spring 30 acts on the cam 29 so as normally to hold the arms 27-28 approximately pa llel with, and out of engagement with, the switch arm 18; the arms 27-28 being disposed in the path of, but normally out of interference with, the switch arm 18. Turning the crank 25 in one direction will cause the longer tripping arm 27 to strike the s eh arm 18 and disconnect he switch members; the spring 36 instantly returning the handle and the arms 27-28 to normally inert position. The arm 28 is of such length, and its end is fla tened, so that when the handle 25 is turned a suitable distance in opposite direction, or to the left, the switc i lever 18 will be depressed so as to disconnect the switch members, or, if disconnected, to hold them in disconnected position, with the flat end of the arm 28 resting on the lever 18, and the sprin 30 cooperat ing to hold the parts against displacement. Simultaneously with the turning of the handle to engage the locking arm 28 with the switch member 18, the cam 29 will act on the upper end of the coupler-actuating lever 16 and move this outwardly so as to carry the end of the coupler 13 beyond the free end of the switch arm 18, as shown, for example, in Fig. l. The knob 3 may then be turned to open the door, but the switch mechanism will be temporarily out of commission the parts 7 and 9 working up and down, as before, and the coupler sliding up and down free, with the pin 14 moving in the slot 15 of lever 16. The downward movement of the switch arm is limited by suitable means, as A spring 32 acts on lever 16 to press it into engagement with cam 29.

The operation of th invention is as follows: If the device is to be applied so as to turn on a light when a door is opened, ordinarily the handle 25 is turned so as to disconnect the members 27-28 from the switch lever 18. This allows the parts to assume their normal position, shown in Fig. By turning the door-knob in either direction, then, the s itch is closeu, shown in Fig. 3. The switch will be maintained closed for such length of time as desired, by reason of the frictional grip afforded by the members 21 on the knife member 20. To disconnect the switch and put out the lights, it is only neces sary to turn the handle 25 in one direction or the other to throw the switch arm 18 downward. If the door is to be opened more or loss during the daytime, when there is no need for utilizing the switch, the handle 25 is thrown so as to turn the locking arm 28 down on the switch lever 18 and lock the switch against being closed, as shown in Fig.

4. As before described, this movement of the handle 25 causes the cam 29 to rock the lever 16 and remove the coupler 13 out of interference with the switch mechanism.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. The combination with a door lock or the like, and its casing, said lock comprising a turnable member, of an electrical switch havin a pivoted member, means for coupling the pivoted member with said turnable member, and independent means for actuating the coupling devices to disengage the switch to allow the lock to be operated independent thereof.

2. The combination with a door knob or the like, of an electrical switch having a movable member, coupling mechanism between the switch and the door knob for closing the switch on the turning of said knob, and independent means for cutting out the switch to permit the knob to be turned without actuating said switch.

3. The combination in a door lock, of a knob stem, a lever actuated thereby, a switch having a pivoted member, a coupling means between said pivoted member and the lever said means comprising a coupler and acoupler actuator, said coupler being mounted on one end of the lever and loosely connected to the actuator and adapted to engage said pivoted member.

4. The combination in a door lock, of a knob stem, a lever actuated by the knob stem, a switch having a pivoted member, coupling means between the switch and said lever whereby on the actuation of the stem the switch is closed, and independent means for actuating the coupler to disengage the switch mechanism to permit the stem to be turned without operating the switch.

5. In a door lock, the combination with a knob stem, of a lever, means operated by the stem for oscillating the lever, a switch having a movable part, a switch lever carrying said movable part, a coupler movable into and out of operative connection with the switch lever, and means for operating said coupler.

6. In a door lock, the combination with a knob stem, of a lever, means operated by the stem for oscillating the lever, a switch having a movable part, a switch lever carrying said movable part, a coupler movable into and out of operative connection with the switch lever, and means for operating said coupler, said coupler being pivoted to the first-mentioned lever.

'7. In a door lock, the combination with a knob stem, of a lever, means operated by the stem for oscillating the lover, a switch having a movable part, a switch lever carrying said movable part, a coupler movable into and out of operative connection with the firstmentioned lever and said switch lever, said coupler connected with one of said levers and also connected with a third lever, and means for operating the last-mentioned lever.

8. In a door lock, the combination with a knob stem, of a lever, means operated by the stem for oscillating the lever, a switch having a movable part, a switch lever carrying said movable part, a coupler movable into and out of operative connection with the firstmentioned lever and said switch lever, said coupler connected with one of said levers and also connected with a third lever, and means for operating the last-mentioned lever, said last-mentioned means including a rockable part engageable with said third lever and also engageable with the switch lever.

9. The combination with the stem of a door-knob or the like, of a forked member engageable by projections on opposite sides of the stem to reciprocate said member on the turning of the stem in either direction, a lever to which the stem is connected, a switch having a bell-crank member, and coupling means between the switch and the first-mentioned lever.

10. The combination with the stem of a door-knob or the like, of a forked member engageable by projections on opposite sides of the stem to reciprocate said member on the turning of the stem in either direction, a lever to which the stem is connected, a switch having a bell-crank member, and coupling means between the switch and the first-mentioned lever, said coupling means comprising a coupling member connected with one of said levers and also connected with a third lever, and means for actuating the third lever.

11. The combination with the stem of a door-knob or the like, of a forked member engageable by projections on opposite sides of the stem to reciprocate said member on the turning of the stem in either direction, a lever to which the stem is connected, a switch having a bell-crank member, and coupling means between the switch and the first-mentioned lever, said coupling means comprising a coupler member connected with one of said.

levers and also connected with a third lever, and means for actuating the third lever, said means for actuating said third lever also provided with means engaging the bell-crank member to open the switch.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WALTER R. SCHLAGE. Witnesses:

WILLIAM VAHEY, GoLsoN YOUNG. 

